[ Vocabulary ]
High levels of pollution can upset the ____________ of an ecosystem.
A. average
B. substance
C. reason
D. balance
Random Topics:
Adjectives & PrepositionsGerund - to Infinitive Gerund & InfinitiveSimple Present and Present Continuous TensesPrepositions and ArticlesPresent SimpleTypes of Simple SentencesPast Tense, Recount Text, and Future TenseGerunds + To InfinitiveGrammar and Verb TensesOther quiz:
a, an, the, Zero Article › ViewMy husband and I are watching the TV.
A. True
B. False
Present Simple: affirmative, negative, interrogative › View
____ Dan ____ a car?
A. Does / have
B. Do / have
C. Does / has
D. Do / has
Past and Future Tenses › ViewYesterday, they ________ a delicious cake.
A. Will bake
B. Bakes
C. Baked
Adverbs of Manner › View
Rewrite the sentences using one of the adverbs.
The children laughed at the funny clown ______.
A. secretly
B. happily
C. badly
D. quietly